Unit Four: Upper Extremity: Part 2 Flashcards
What are the four posterior muscles of the pectoral girdle?
- Trapezius. 2. Deltoid. 3. Teres major. 4. Latissimus dorsi.
What muscles attach to the lesser tubercle, or intertubular groove, of the humerus?
- Teres major. 2. Latissimus dorsi. 3. Pectoral major.
What muscles insert somewhere along the medial border of the scapuila?
- Serratus Anterior. 2. Levator scapulae. 3. Rhomboid major. 4. Rhomboid minor.
What muscles have an attachment point at the coracoid process of the scapula?
- Pectoralis minor. 2. Coracobrachialis. 3. Short head of biceps brachii.
What three muscles insert onto the greater tubercle of the humerus?
- Supraspinatus. 2. Infraspinatus. 3. Teres minor.
What muscles allow for scapular elevation?
- Superior fibers of the trapezius. 2. Levator scapulae. 3. Rhomboids.
What muscles allow for scapular depression?
- Inferior fibers of trapezius. 2. Pectoralis minor.
What muscles allow for scapular protraction?
- Pectoralis minor. 2. Serratus anterior.
What muscles allow for scapular retraction?
- Rhomboid minor. 2. Rhomboid major. 3. Middle fibers of trapezius.
What muscles allow for scapular inferior (downward) rotation?
- Levator scapulae. 2. Rhomboid minor. 3. Rhomboid major.
What muscles allow for scapular superior (upward) rotation?
- Superior fibers of trapezius. 2. Serratus anterior.
What muscles allow for GH lateral rotation?
- Posterior fibers of deltoid. 2. Infraspinatus. 3. Teres minor.
What muscles allow for GH abduction?
- Middle fibers for deltoid. 2. Supraspinatus.
What muscles allow for GH flexion?
- Anterior fibers of deltoid. 2. Coracobrachialis. 3. Biceps brachii. 4. Pectoralis major.
What muscles allow for GH horizontal abduction?
- Posterior fibers of deltoid. 2. Infraspinatus? Teres minor?
What muscles allow for GH horizontal adduction?
- Pectoralis major. 2. Coracobrachialis? Anterior deltoid?